Hulled millet is proso millet with the inedible hull removed, giving the small yellow kernels used in porridge, gluten-free products and bakery. Once hulled, millet fat oxidises and turns bitter, so freshness is the key quality issue. Buyers should also contract weed seed control, because Datura seeds bring tropane alkaloids.
At a glance
- Raw material: proso millet (Panicum miliaceum)
- Key numbers: unhulled kernels, broken kernels, foreign matter, moisture
- Freshness: bitterness develops after hulling; ship soon after processing
- Key contaminant: tropane alkaloids from Datura seeds
- Naturally free of gluten; claim only with evidence
Grades, cuts and calibration
Quality is described by the share of unhulled kernels, broken kernels, foreign matter and colour. Bright yellow, evenly sized kernels indicate fresh, well-hulled millet.
Hulled millet keeps for months rather than years. The date of hulling should be on the certificate, and long storage after hulling should be avoided.
Trade grades are usually described by the share of whole hulled kernels, unhulled kernels, broken kernels and foreign matter, with colour and taste assessed against an agreed reference sample. Ukrainian national standards define grades for hulled millet; EU buyers usually convert them into their own contract limits rather than buying by grade name.
Seasonality and availability
Millet is harvested in August and September and stored unhulled; hulling close to shipment protects freshness. Proso millet is sown late and harvested from late August into September; hulling continues through the year from stored grain, so ask for the hulling date rather than the harvest year alone.
What the buyer checks at intake
- Date of hulling and sensory check for bitterness.
- Unhulled and broken kernels, foreign matter.
- Tropane alkaloids and other contaminants.
- Moisture and infestation.
Where it is used
Porridge and retail grain packs, gluten-free bakery, baby food ingredients and multigrain mixes.
Uses and choosing a lot
Hulled millet is cooked as a porridge or side dish, puffed for breakfast cereals, milled into flour for gluten-free blends and used in multigrain bread and bars. Food buyers want bright yellow, uniform kernels with few unhulled or broken grains; bird-feed and pet-food buyers often take unhulled millet instead, under a different specification.
Colour, kernel size and taste vary with variety and season, so a reference sample agreed before shipment is the practical way to set the visual standard. A cooking test shows bitterness and texture better than any single lab value. Millet is often bought alongside buckwheat groats, and the two share the same Datura risk and cleaning logic.
Standards and routes
Bagged by curtainsider or container; keep cool and dry.
Freshness, contaminants and documents
Hulling exposes the fat-rich germ, and oxidised fat makes millet bitter. Ask for the hulling date on the documents, plan shipment soon after hulling, and keep the lot cool and dry. Vacuum or modified-atmosphere retail packs extend the life of the finished product, not of a lot that was already stale.
Tropane alkaloids from Datura seeds are the main chemical risk; optical sorting and sieving remove most seeds, and testing confirms the result. Millet is also checked for mycotoxins, pesticide residues and infestation.
Ask for a certificate of analysis per lot covering moisture, unhulled and broken kernels, foreign matter, tropane alkaloids and the contracted contaminants. How the sample was taken matters as much as the result: see how grain is sampled for export and the mycotoxin sampling guide.
Naturally gluten-free millet can still pick up wheat or barley in the field, in transport or at the huller, so a gluten-free claim needs lot evidence.
Common specification mistakes
- No hulling date on the documents
- No tropane alkaloid testing
- Long storage after hulling
How to brief a supplier
- State food use and colour expectation
- Give limits for unhulled and broken kernels
- Require the hulling date
- Request tropane alkaloid testing
- Define packaging